Sending massive love and hugs to you OP.
My twins are 4 now. One was very sick as soon as he was born. Various diagnoses along the way and both diagnosed with autism age 2.
I understand what you’re feeling right now. It’s so overwhelming and nothing like you expected and it all feels so unfair, especially when you are surrounded by other people’s healthy, typical children. It’s okay to feel this way - it’s a shock and you need to navigate things you didn’t expect.
We have had a hard couple of years but my boys have just started at a brilliant specialist school and things are looking up. I still have my moments for sure, but overall I don’t feel that crushing sadness and fear that I used to feel.
I know lots of children with CP as DT2 has a type of brain damage which often causes it, although he doesn’t have it. They all achieve so much and you will find a way through this and learn as you go.
Hang in there
and be kind to each other - access some counselling if you need to. So many relationships break down in this sort of situation because you’re both going through things in different ways at different times - talk to each other, support each other, try to avoid blame and resentment. Your baby is wonderful, they will be wonderful, your road might be different but that doesn’t mean it won’t be full of joy, just in different ways. But for now, accept how you feel because how you feel is valid.